tegra: make local functions static

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
diff --git a/drivers/i2c/tegra_i2c.c b/drivers/i2c/tegra_i2c.c
index 257b72f..562211e 100644
--- a/drivers/i2c/tegra_i2c.c
+++ b/drivers/i2c/tegra_i2c.c
@@ -471,8 +471,8 @@
 }
 
 /* i2c write version without the register address */
-int i2c_write_data(struct i2c_bus *bus, uchar chip, uchar *buffer, int len,
-		   bool end_with_repeated_start)
+static int i2c_write_data(struct i2c_bus *bus, uchar chip, uchar *buffer,
+			  int len, bool end_with_repeated_start)
 {
 	int rc;
 
@@ -493,7 +493,8 @@
 }
 
 /* i2c read version without the register address */
-int i2c_read_data(struct i2c_bus *bus, uchar chip, uchar *buffer, int len)
+static int i2c_read_data(struct i2c_bus *bus, uchar chip, uchar *buffer,
+				int len)
 {
 	int rc;